-14.9% is the change from 577 to 491
Calculation steps:
[( 491 - 577 ) ÷ 577] x 100 = -14.9%
Formula
Percentage change = [(491 - 577) / 577] x 100
Subtract the new number by the original number
491 - 577 = -86
-86 ÷ 577 = -0.14904679376083188
-0.14904679376083188 x 100 = -14.9%